Centrifriction bobbin cleaner



4 Sheets-Sheet 1 Filed March 4, 1960 Jan. 15, 1963 F. L. GRAHAM CENTRIFRICTION BOBBIN CLEANER- 4 Sheets-Sheet 2 Filed March 4, 1960 lwmiron jgOLX/ Jan. 15, 1963 F. L. GRAHAM 3,072,997

CENTRIFRICTION BOBBIN CLEANER Filed March 4, 1960 4 Sheets-Sheet 3 7III1I F J Lum INVENT R.

Jan. 15, 1963 F. GRAHAM 3,072,997

CENTRIFRICTION BOBBIN CLEANER Filed March 4, 1960 4 Sheets-Sheet 4 FIG! 7 TOGGLE SWITCH 2| 2O MICRO l MICRO' SWITCH SWITCH drawings and specification United States Patent Ofifice 3,072,997 Patented Jan. 15, 1963 3,072,997 7 CENTRIFRICTION BOBBIN CLEANER Fred L. Graham, Anniston, Ala., assignor to Adelaide Mills, Anniston, Ala., a corporation of Alabama Filed Mar. 4, 1969, Ser. No. 12,730 7 Claims. (Cl. 28-19) This invention relates to a centrifriction bobbin cleaner. It has for its main object to provide a machine to remove roving quickly from bobbins regardless of how many layers are left on them. In block creeling it is not possible to make the roving run olf all together. Some may have one layer or less and others may have ten or fifteen layers.

Further objects are to provide such a machine that will be highly satisfactory for the purpose intended, simple in structure, comparatively cheap to manufacture, easy to keep in working condition, and very durable.

Other objects and advantages will appear from the By referring generally to the drawings it will be observed that:

ing motor and other parts.

FIG. 7 shows the wiring and switch connections.

Similar reference numerals refer to similar parts throughout the several views.

Referring to the drawings in detail it will be seen that the machine comprises a main supporting frame I having a trough formed by one side 2 held in fixed condition on the frame with its other side 3 mounted swingably on the opposite side of the frame by means of ear portions 3' formed thereon to engage the frame as seen in FIG. 5. A metal roller 4 is supported by its ends 5 and 6 in bearings 7 and 8 and is revolved by a pulley 9, carried at the roller end 5 beyond the bearing 7, through a belt 10 leading to a pulley 11 of a drive motor 12. A second metal roller 13 is mounted by its ends 14 and 15 in bearings 16 and 17 that are supported slidably by spring means 18 adapted to press this second roller 13 for its entire length against the first roller 4. The second roller 13 is encased in rubber cots or sections 19 and, being pressed in contact tightly with the adjacent face of the other roller 4, revolves as a result of friction contact when the other roller 4 is driven. There are microswitches 2t} and 21 at the ends of the machine near the rubber covered roller 13 adapted to disconnect power from the motor 12, and thus stop the machine, if a choke occurs anywhere on the rollers 4 and 13 that tends to force them apart. The roilers 4 and 13 are suitably made of steel tubing and may be of any suitable diameter and length, but ZMt-inch diameter for the driving roller 4, 2-inch diameter for the driven roller 13, with seven sections of rubber 12 inches long, 2 inches inside diameter, and 2 /2 inches outside diameter would be highly satisfactory. A toggle switch 22 is in the supply wires 23.

In operation bobbins 24 are cleaned by being rotated at high speed in a direction to unwind the roving. This causes the roving to tend to sling off. The loose end is acted on by the centrifugal force and in turn caught between the metal roller 4 and the rubber covered roller 13 and pulled off. The roving passes through the rollers 4 and 13 with enough speed to sling it down and away from the rollers thus preventing it from lapping around the rollers; as each of these rollers 4 and 13 necessarily operates at a surface speed comparable to that at which the bobbins 24 are rotated and is of a diametric size, suitably as noted above, that is restricted so as to cause roving passing therethrough to be thrown free centrifugally from the roller surfaces. The machine is sufficiently high and wide to accommodate wheeled waste boxes beneath it to catch the roving taken off. The bobbins 24 to be cleaned are placed in the trough of the machine on the rollers 4 and 13 by hand one at a time until there are six in the machine. Being placed one at a time the first bobbin 24 must travel the entire length of the rollers 4 and 13 one bobbins length at a time as each successive bobbin is placed on the rollers. After the machine is full, as each additional bobbin 24 is placed in the machine to be cleaned, a cleaned one is forced ofi at the other end of the machine and falls into a box placed for this purpose.

The machine may be made of any material suitable for the purpose, but I prefer to use good grades of metal, rubber, and electrical equipment. Also it may be made in different sizes and capacities.

While I have shown and described the preferred embodiment of my invention, I do not wish to limit same to the exact and precise details of structure, and I reserve the right to make all modifications and changes so long as they remain within the scope of the invention and the following claims.

Having described my invention I claim:

1. A machine for cleaning bobbins, particularly roving bobbins, comprising a first driven roll, a second roll disposed to form a nip with said first roll, a tractive surface covering on one of said rolls, said first and second rolls being arranged to have bobbins placed for cleaning of residual yarn therefrom on said rolls immediately adjacent the entrance side of the nip thereof, and said first roll being driven at a relatively high surface speed and both of said rolls having diameters of restricted size for rotating bobbins placed on said rolls at said relatively high surface speed through the tractive action of said second roll, and thereby causing the free end of residual yarn on said bobbins to be thrown loose by centrifugal force so as to enter the nip of said rolls and re sult in withdrawal of all said residual yarn from said bobbins by said rolls through said nip, as well as causing the withdrawn residual yarn to be thrown free centrifugally from the surface of said rolls beyond said nip.

2. A machine for cleaning bobbins comprising first and second rolls disposed adjacently to form a nip, said rolls being arranged to support bobbins immediately adjacent the entrance side of said nip and to rotate said bobbins for cleaning of residual yarn therefrom, and means for driving said rolls to rotate bobbins supported thereon at a relatively high surface speed and thereby cause the free end of residual yarn on said supported bobbins to be thrown loose centrifugally so as to enter the nip of said rolls and result in withdrawal of all said residual yarn from said supported bobbins by said rolls through said nip, said rolls being restricted in diametric size so as also to cause residual yarn Withdrawn from said bobbins to be thrown free centrifugally from the surface of said rolls beyond said nip.

3. A machine for cleaning bobbins, particularly roving bobbins, comprising a first driven roll, a second adjacent roll forming a nip therewith, said rolls being arranged to support bobbins immediately adjacent the entrance side of said nip with one of said rolls having tractive advantage r 3 for, rotating said bobbins to clean residual yarn therefrom, and said first roll being driven at a relatively high surface speed for likewise rotating bobbins supported on said rolls at said relatively high surface speed and thereby causing the free end of residual yarn on said supported bobbins to be thrown loose centrifugally so as to enter the nip of said rolls and result in withdrawal of all said residual yarn from said supported bobbins by said rolls through said nip, and both of said rolls being restricted in diametric size so as also to cause residual yarn withdrawn from said bobbins to be thrown free centrifugally from the surface of said rolls beyond said nip.

4. A centrifriction bobbin cleaner comprising a supporting frame, means carried on said frame forming an open-bottom trough, a pair of rollers mounted on said frame at the open bottom of said trough to extend lengthwise thereof and form a nip thereat, and means for rotating said rollers at a relatively high surface speed and thereby causing the free end of residual yarn on bobbins placed in said trough for cleaning by said rollers to be thrown loose centrifugally so as to enter the nip of said rollers and result in the withdrawal of all said residual yarn from said bobbins by said rollers through said nip, said rollers being restricted in diametric size so as also to cause residual yarn withdrawn from said bobbins to be thrown free centrifugally from the surface of said rollers beyond said nip.

5. A machine for cleaning bobbins comprising nip forming means arranged to support bobbins immediately adjacent the nip entrance and to rotate said bobbins for cleaning residual yarn therefrom, and means for driving tsaid nip forming means to rotate bobbins supported thereon at a relatively high surface speed and thereby cause the free end of residual yarn on said supported bobbins to be thrown loose centrifugally so as to enter the nip formed thereby and result in withdrawal of all said residual yarn from said supported bobbins through said nip, said nip forming means being further arranged for attaining a comparable surface speed about a diameter that is restricted so as also to cause residual yarn withdrawn from said bobbins to be thrown centrifugally from said nip forming means beyond said nip.

6. The method of cleaning residual roving from .spent bobbins which comprises delivering the spentbobbins to nip forming means arranged for supporting said bobbins immediately adjacent the nip entrance and for rotating a supported bobbin to unwind said residual roving therefrom, and driving said nip forming means to rotate bobbins supported thereon at a surface speed sufficiently high to cause the free end of residual roving on the supported bobbins to be thrown loose centrifugally so as to enter the nip of said means -for continued withdrawal of all said residual roving from said supported bobbins through said nip, said nip forming means being additionally arranged for attaining a comparable surface speed about a diameter that is restricted so as also to cause residual roving withdrawn from said bobbins to be thrown centrifugally from said nip forming means beyond said nip.

7. The method of cleaning residual windings from spent bobbins, which comprises delivering the bobbins to nip forming means arranged for supporting said bobbins immediately adjacent the nip entrance and for rotating a supported bobbin to unwind said residual windings therefrom, and driving said nip forming means to rotate bobbins supported thereon at a surface speed sufficiently high to cause the free end of residual windings on the supported bobbins to be thrown loose centrifugally so as to enter the nip of said means for continued withdrawal of all said residual windings from said supported bobbins through said nip, while causing said nip forming means to operate at a comparable surface speed about a diameter that is restricted so that windings withdrawn from said bobbins are also thrown centrifugally from said nip forming means beyond said nip.

References Cited in the file of this patent UNITED STATES PATENTS 1,080,794 Walworth Dec. 9, 1913 2,820,278 Mariani et a1 Jan. 21, 1958 2,834,090 Vowles May 13., 1958 

1. A MACHINE FOR CLEANING BOBBINS, PARTICULARLY ROVING BOBBINS, COMPRISING A FIRST DRIVEN ROLL, A SECOND ROLL DISPOSED TO FORM A NIP WITH SAID FIRST ROLL, A TRACTIVE SURFACE COVERING ON ONE OF SAID ROLLS, SAID FIRST AND SECOND ROLLS BEING ARRANGED TO HAVE BOBBINS PLACED FOR CLEANING OF RESIDUAL YARN THEREFROM ON SAID ROLLS IMMEDIATELY ADJACENT THE ENTRANCE SIDE OF THE NIP THEREOF, AND SAID FIRST ROLL BEING DRIVEN AT A RELATIVELY HIGH SURFACE SPEED AND BOTH OF SAID ROLLS HAVING DIAMETERS OF RESTRICTED SIZE FOR ROTATING BOBBINS PLACED ON SAID ROLLS AT SAID RELATIVELY HIGH SURFACE SPEED THROUGH THE TRACTIVE ACTION OF SAID SECOND ROLL, AND THEREBY CAUSING THE FREE END OF RESIDUAL YARN ON SAID BOBBINS TO BE THROWN LOOSE BY CENTRIFUGAL FORCE SO AS TO ENTER THE NIP OF SAID ROLLS AND RESULT IN WITHDRAWAL OF ALL SAID RESIDUAL YARN FROM SAID BOBBINS BY SAID ROLLS THROUGH SAID NIP, AS WELL AS CAUSING THE WITHDRAWN RESIDUAL YARN TO BE THROWN FREE CENTRIFUGALLY FROM THE SURFACE OF SAID ROLLS BEYOND SAID NIP. 